Apparatus for the regulation of pressure in the coking chambers of coke ovens



March 1,1932. c, OTTO APPARATUS FOR THE REGULATION OF PRESSURE IN THE COKING CHAMBERS OF COKE OVENS Filed Aug. 21, 1926 2 Sheets-Sheet l PRESSKIRE rlsPmvslrE //7 ven/or:

March 1, 1932. 3 c. OTTO APPARATUS FOR THE REGULATION OF PRESSURE IN THE COKING CHAMBERS OF COKE OVENS Filed Aug. 21, 1925 2 Sheets-Sheet 2 HFESSl/AE PESPDN-SIVE MEANS //7 venforv Patented Mar. 1, 1932 UNITED STATES PATENT OFFICE CARL o'r'ro, or ESSEN-BBEDENEY, GERMANY APPARATUS FOR THE REGULATION OF PRESSURE IN THE COKING CHAMBERS F COKE OVENS Application filed August 21, 1926, Serial No. 180,722, and in Germany August 27, 1925..

by putting regulating means in the connec- 16 tion pipes between the hydraulic main, and the oven chambers. These regulating means are actuated by the pressure in the connecting pipes or by the pressure in the oven chambers. It is preferable to operate the auto- :0 matic regulating means by the pressure in the oven chambers. In this case the connecting pipe which controls the regulating means is connected to a pressure-equalizing chamber, arranged at the side of the coke oven 86 door, throughout its whole length. The advantage of this is to keep the pressure in the coke oven chamber at such a point as to get the best results in by-products and gas output. When the regulating means in the so ascension pipes is actuated by the pressure in the connecting pipes, the gas production is very much increased as compared with the arrangement where only a single regulating means is put inthe gas main after it leaves the hydraulic main. By putting the regulating means in the ascension pipes, controlled by the pressure in the oven chambers, the variability in the ascending power of the gas, which has its origin in the difference in temperature and in hydrogen content of the coke oven gas during the coking time, is eliminated.

In the accompanying drawings, forming a part of this specification, and showing, for the purpose of exemplification, two preferred forms and manners, in which the invention may be embodied and practiced, but without limiting the claimed invention specifically to such illustrative instances:

Figure 1 is a vertical section taken through a coking chamber, equipped with the improvements of the present invention.

Figure 1 is a detail plan view of the offtake, the throttle valve, the pressure-responsive means and the connections between said means and said valve.

Figure 2 is a horizontal section of Figure 1 on an enlarged scale, taken horizontally through the coking chamber.

Figure 3'is another vertical section taken longitudinally throu h the coking chamber showing a second em odiment of the invention.

Figure 4 is a horizontal section on line 4.4 of Figure 3, and.

Figure 5 is a side View of certain parts of Figure 3, on an enlarged scale.

Referring to the drawings, 1, is a coking chamber which is provided, in the usual manner, at the top, with an ascension pipe 2. The ascension pipe 2, is connected with a gas mainduct and serves to carry the distillation gases produced in the coking chamber 1, to the main 3. In the ascensionpipe 2, there is arranged a throttling means 4, which is controlled by means of a. pressure-responsive regulator 5. The regulator 5, is connected by a connection pipe 6, with a pressure equalizing chamber 7, -which chamber is in communication with the interior of the oven 8 chamber 1, as shown in Figure 2. In the preferred form of the invention, the chamber is arranged between the oven door 8 and the door frame 9. The space between the door and door frame at the exterior of the oven, is sealed against the atmosphere in the usual way as by luting, after the door is closed. If the door 8, is removed, the chamber 7 may be cleaned without difiiculty. As shown in Figures 1 and 2, the lower part of the connection pipe 6, may be made as a movable member 6a, and may be easily and removably introduced into the door frame at 10 by means of a plug, which is adapted to seal the chamber 7, against the atmosphere.

By the above meansthe strength of the suction drawing oil the gas from the oven chamber is automatically regulated in accordance with the amount of gas production at any time in the oven chamber. The throttle valve 4, whose position is controlled by regulator 5, is actuated by the pressure in the oven chamber, equalized in chamber 7, and transmitted to the regulator by pipe 6. When, for example, as in the beginning of gasification, a high static pressure is set up within the lower part of the oven chamber the pressure at different heights of the oven chamber is equalized by equalizing chamber 7, which communicates with the oven chamber throughout its height. This equalized pressure actuates the regulator through pipe 6, and opens throttle valve 4, so as to increase the amount of gas withdrawn at the top of the oven chamber and reduce the pressure in the oven chamber to the point desired.

In Figures 3 to 5, in which corresponding parts are indicated by the same reference numeral, there is shown another embodiment of the invention, which consists in another form of connecting means, connecting the interior of the coking chamber and the regulator. The connecting means 6, in this case, is provided with a short horizontal end member 6a, which leads through the brickwork 11, from the oven front immediately to the pressure-equalizing chamber 7. For the purpose of easy cleaning of the member So, this member is provided with an end 14, projecting beyond the junction 13 between member 6a and the vertical partof the connecting means 6. Member 6a, is sealed by a removable plug 15, against the atmosphere. In the same manner the vertical part of the connecting means 6, projects beyond the junction 13. This projecting end forms a small chamber 16, which may be sealed by a removable plug 17., and is adapted to store coal particles and dirt, which may perhaps enter the connecting means 6. By this means the vertical pipe 6 as well as the horizontal end member 6a, may be cleaned, each for itself.

Thehorizontal member 6a, lying in the brickwork 11 of the oven (constituting the end of the heating wall) is preferably formed on the arc of a circle. By this means the part 6a, after the oven construction is finished, may be inserted in corresponding recesses provided in the brickwork 11. If the ovenfront is furnished with steel plates 9, or the like, as shown in Figure 4, corresponding holes 9a, are naturally to be arranged in these plates.

Asshown, the vertical part of the connecting pipe 6, is formed as a pi e, but it is possible to make this part as a, tube or pipe, which may be removably connected with the horizontal part 6a, at the junction 13.

Having thus described the invention and ,its operation, it will be understood that changes may be made in carrying the invention into effect, without departing from the principle thereof.

What I claim is:

xible metaT 1. In a coke oven comprising a coking chamber, a door frame and a door adapted to fit therein, and a gas ofi'take leading from said chamber, means for regulating the gas pressure in said chamber, comprising a throttle in said ofltake, a pressure responsive device operatively connected to said throttle, said door and door frame being constructed to enclose a. pressure-equalizing space therebetwcen, said space communicating with said coking chamber and a pipe leading from said space to said pressure responsive device.

2. The combination with a coking chamber having a door frame, a door fitting therein, and a gas ofitake leading upwardly from the chamber, of a throttle valve in said ofltake, a pressure responsive device located adjacent the portion of the ofitake containing said valve, a positive connection between said pressure responsive device and said valve, said door frame and door being constructed and arranged to form a pressure-equalizing chamber therebetween o )ening into the coking chamber and exten' ing throughout the height of the latter, and a pipe putting said pressure-equalizing chamber into communication with said pressure responsive device.

In testimony whereof, I have signed my name to this specification.

CARL OTTO. 

